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BCH Order Code VALPR Valproic Acid, Serum

Performing Laboratory

Boulder Community Health

Specimen Requirements

Container/Tube: Plain, red-top tube(s)
Specimen Volume: 1 mL of serum

Collection Instructions: Peak levels occur between 1 and 3 hours after dose, and optimal trough sampling time should be within 30 minutes of next dose.

Specimen Transport Temperature


Reference Values

Therapeutic concentration: 50-150 µg/mL

Toxic concentration (automatic call-back): >200 µg/mL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding